Large span bridge is a cable tray support than the average span, and because the structural design is reasonable, and therefore has the capacity cable tray off than the general characteristics of large, so it is not only applicable to oil refining, chemicals, textiles, machinery, metallurgy, electric power, television, radio and other industrial and mining enterprises in the indoor and outdoor laying overhead cables can also be used as subway, underground civil air defense projects such as fortifications cables. 

 Price is negotiable. 
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